Bottle-stopper.



e; KIRKEGAARD.

BOTTLE STOPPBR;

APPLICATION FILED 8;?1219, 1908.

929,7?9Q Y Y PatentedMay25,1909.

'lyn and State of New York, have invented .into an absolutely unyielding flange beneath nnrrnn srarne Parana enrich.

cacao KIRKEcAiRD, or NEW YORK, N. v, ASSIGNOR TO IMPERIAL s'rorrnn COMPANY, A CORPORATION or MAINE.

BQ'ITLE-STOPPER.

I Application filed September 19,

To all whom it may concern:

LBe it known that I, Gnoae Knuincnann, a citizen of the United States, residing at the city of New York, in the borough of Brookc'e-rtain new and useful Improvements in Bottle-Stoppers, of which the following is a full, clear, and exact description.

This invention relates to stoppers for bottles, jars and similar receptacles, and is'oi that type which comprises a metallic cap with means for engaging an annular shoulder or bead on the exterior of the neck of the bottle to hold under compression a packing disk interposed between the mouth of the bottle and the cap.

- The object of the invention is to provide means for holding the cap on the bottle against the internal pressure which for its siiiliciency depends upon the shape or formation of the metallic portion of the cap rather than upon the stiffness or weight of the metal of which the cap is composed; thus a comparatively thin metal for the cap may be used, and a corresponding economy achieved in the manufacture thereof.

In some of its aspects the present invention is in the nature of an improvement on my prior patent, Number 889,137, dated May 26, 1908, and in other respects the present invention covers broadly new subject matter.

A particular feature of the present invention. lies in the provision of vertical fiutings of such a character that the cap will yield in being pried off a bottle neck instead of cracking oi? the usual glass bead; a result which might occur if the cap were formed and around such bead. As will also later appear, these flutings provide an additional means of engagement between the cap and the bottle neck to hold the cap in place. The i'lutings also permit the cap to bend upon a transverse line across the top surface thereof when it is being removed from a bottle.

lVith these and various other objects in view my invention consists in the fCtItLUL'GS of construction and combination as hereinafter set forth and claimed.

In the drawings: Figure l is a perspective View of a cap or stopper embodying the prin ciples of my invention, before it is applied to a bottle. Fig. 2 is an underside view of the same. Fig. 3 is a vertical sectional view on the line III III of Fig. 2, showing the Specification of Letters Patent.

Patented May 25, 1909.

1908. Serial No. 453,779.

cap applied to a bottle. Fig; l is a side view; of the same.

The cap comprises essentially a disk 1,

having integrally formed with it a depend- 111g wall 2, and flaring rim 3,depend1ng from.

disk of packing material 4, such as cork or the vertical wall. The cap contains the usual paper, which is to be compressed against the mouth of the bottle to eficct the seal. I

The holding devices of the cap are tormed upon the flaring rim 3.

It. is provided with a series of inwardly and upwardly bent lips (5. each being formed by bending a shortmay be conveniently termed inturned re 1 versely directed lips or inwardly directed reversel y bent lips, in the sense that they are. bent inward so as to he closely parallel to the body of the flange 3, from which theyare:

deflected. the lips are bent on a curve rather than on a straighthnc or edge, they are virtually re-l On account of the way in which 180 inforced since they have a shape which COHIJ bines the strength of an arch and a truss. In other words, the lips are crescent shaped, and merge into the edge of the flange 3 at their pointed extremities which are the logical point of anchorage of any truss or arch structure.

By the present invention I do notarrange the lips 6 closely adjacent to one another around the rim 3, but have them separated by an appreciable distance 7 in which the rim has vertical fiutings or corrugations 11. In practice I have a pair of upwardly disposed flutings in the space between each pair of adjacent. lips 6, there being also formed an inwardly directed protuberance 12 between the iiuti'ngs 11.

When the cap is applied to the bottle, it is forced downward thereon until the cork is compressed so that the upper edge of the lips will fall. within the zone of the bead or shoulder 5. Then by forcing the ring 3 inward as shown in Fig. 4i, the upper jaws of the lips will be forced against the shoulder 5 and hold the cap on the bottle with the cork under compression. In this action the lips are very strong, mainly on accountof the fact that each is a miniature truss or archloaded at its middle and anchored at its ends,

as already referred to. Moreover the lips can only be made by drawing or compressing the metal somewhat, so that any. reverse bending due to strains in use, must correspondingly produce a reverse drawing or compression of the metal itself, ordinarily requiring a great expenditure of force. The machine or tool for applying this cap to the bottle Will be .Very simple since it will reqluire only the plunger to press on the top of 1: 1e cap and a simple ring pressed down on the outside of the vertical wall 2 and forced inward on the rim 3 to the position shown so as to form or bend the same into the relations shown in Figs. 3 and 4.

In the above action the flutings 11 with their intervening inwardly directing protu- I berances 12 take only a slight part, although the rotuberances 12 engage the head of the bott e neck and exert a holding connection in addition to that of the lips 6. The flutings 11 come into'efi'ect particularly, however, when the cap is removed, their form permitting the entlre rim to expand slightly without actually stretching thdmet'al, the expansion being accompanied by a slight straightening out of the bends of the corrugations. This prevents the bottle neck bemg cracked oil below the usual head when the cap is removed.

A. feature of the present invention lies in the fact that an uneven number of the pairs of flutin s or corrugations are provided around t e rim of the cap. I have illustrated seven airs of these flutings or "corrugations alt ough five would also be a serviceable number. By having an odd number in this way it would be evident that there is always a line between the substantially opposite pairs of fiutings which is slightly to one slde of the directly diametral" line, and on 'this line the cap bends upward slightly when it is engaged on one side by the usual cap removing tool. It is found in practice that the cap is removed more easily and expeditiously by having the material capable of bending in this way than if it is entirely rigid, or only capable of bending on a dialnetral line.

What I claim is:

l. A bottle-cap having a dependent circumferential rim with a plurality of inturned lips and intermediate fluted )ortions.

A bottle-cap having a depen ent circumferential rim with inturned reversely directed lips bent on curved lines, and inter- In witness whereof, "Lsubscribe my signature, in the presence of two witnesses.

' GEORG KIRKEGAARD. Witnesses WALoo M. CHAPIN, JAMES DE ANTONIO. 

